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ARC: Cache: Move IOC initialization to a separate function

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Move IOC initialization from cache_init() to a separate function.

This is the preparation for the next patch where we'll switch
to is_isa_arcv2() function usage instead of "CONFIG_ISA_ARCV2"
ifdef.

Also it makes cache_init function a bit cleaner.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
master
Eugeniy Paltsev 7 years ago committed by Alexey Brodkin
parent c27814be33
commit a6f557c4e0
1 changed files with 30 additions and 26 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 56
      arch/arc/lib/cache.c

56
arch/arc/lib/cache.c
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@ -231,6 +231,34 @@ static void __slc_rgn_op(unsigned long paddr, unsigned long sz, const int op)
while (read_aux_reg(ARC_AUX_SLC_CTRL) & SLC_CTRL_BUSY);
}
static void arc_ioc_setup(void)
{
/* IOC Aperture start is equal to DDR start */
unsigned int ap_base = CONFIG_SYS_SDRAM_BASE;
/* IOC Aperture size is equal to DDR size */
long ap_size = CONFIG_SYS_SDRAM_SIZE;
flush_n_invalidate_dcache_all();
if (!is_power_of_2(ap_size) || ap_size < 4096)
panic("IOC Aperture size must be power of 2 and bigger 4Kib");
/*
* IOC Aperture size decoded as 2 ^ (SIZE + 2) KB,
* so setting 0x11 implies 512M, 0x12 implies 1G...
*/
write_aux_reg(ARC_AUX_IO_COH_AP0_SIZE,
order_base_2(ap_size / 1024) - 2);
/* IOC Aperture start must be aligned to the size of the aperture */
if (ap_base % ap_size != 0)
panic("IOC Aperture start must be aligned to the size of the aperture");
write_aux_reg(ARC_AUX_IO_COH_AP0_BASE, ap_base >> 12);
write_aux_reg(ARC_AUX_IO_COH_PARTIAL, 1);
write_aux_reg(ARC_AUX_IO_COH_ENABLE, 1);
}
#endif /* CONFIG_ISA_ARCV2 */
#ifdef CONFIG_ISA_ARCV2
@ -324,32 +352,8 @@ void cache_init(void)
#ifdef CONFIG_ISA_ARCV2
read_decode_cache_bcr_arcv2();
if (ioc_exists) {
/* IOC Aperture start is equal to DDR start */
unsigned int ap_base = CONFIG_SYS_SDRAM_BASE;
/* IOC Aperture size is equal to DDR size */
long ap_size = CONFIG_SYS_SDRAM_SIZE;
flush_n_invalidate_dcache_all();
if (!is_power_of_2(ap_size) || ap_size < 4096)
panic("IOC Aperture size must be power of 2 and bigger 4Kib");
/*
* IOC Aperture size decoded as 2 ^ (SIZE + 2) KB,
* so setting 0x11 implies 512M, 0x12 implies 1G...
*/
write_aux_reg(ARC_AUX_IO_COH_AP0_SIZE,
order_base_2(ap_size / 1024) - 2);
/* IOC Aperture start must be aligned to the size of the aperture */
if (ap_base % ap_size != 0)
panic("IOC Aperture start must be aligned to the size of the aperture");
write_aux_reg(ARC_AUX_IO_COH_AP0_BASE, ap_base >> 12);
write_aux_reg(ARC_AUX_IO_COH_PARTIAL, 1);
write_aux_reg(ARC_AUX_IO_COH_ENABLE, 1);
}
if (ioc_exists)
arc_ioc_setup();
read_decode_mmu_bcr();

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